62 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
Natural vectors —Blaberus craniifer, U.S.A. (Wedberg, et al., 
1949) : Organism isolated from feces. 
Blatta orientalis, Italy (Spinelli and Reitano, 1932): Organism 
isolated from intestinal tract. 
Periplaneta americana, U.S.A. (Bitter and Williams, 1949, 1949a) : 
Organism isolated from intestinal tract. Doubtful pathogenicity. 
Cockroaches, U.S.A. (Longfellow, 1913) : Organism isolated from 
the legs. 
Proteus spp. 
Disease.—All four species of this genus are possibly pathogenic; 
see preceding species. 
Natural vectors.——Blatta orientalis and Periplaneta americana, 
U.S.A. (Olson and Rueger, 1950; T. A. Olson, p.c.). These or- 
ganisms were isolated from laboratory-reared cockroaches. 
P. americana, U.S.A. (Bitter and Williams, 1949): Organisms 
isolated from intestines. Doubtful pathogenicity. 
Salmonella anatis (Rettger and Scoville) Bergey et al. 
Synonymy.—Salmonella anatum. 
Disease.—Intestinal infections in chickens and man. Widely dis- 
tributed in man and domestic animals. 
Natural vectors.—Periplaneta americana, U.S.A. (Eads et al., 
1954): Organism isolated from cockroaches collected in sewer man- 
holes. 
Salmonella choleraesuis (Smith) Weldin 
Synonymy—B. suipestifer of Pavlovskii. 
Disease-—Occasionally causes acute gastroenteritis and enteric 
fever in man. 
Experimental vectors——Polyphaga saussurei, U.S.S.R. (Zmeev in 
Pavlovskii, 1948): The organism, when fed in bread and human 
feces, passed through the insects unchanged. 
Salmonella enteritidis (Gaertner) Castellani and Chalmers 
Synonymy.—B. Gartneri of Pavlovskii. 
Disease —First isolated from human feces in an epidemic of food 
poisoning. Also a pathogen of domestic and wild animals. 
Experimental vectors.—Blatta orientalis, U.S.S.R. (Rozengolts and 
Tudina in Pavlovskii, 1948) : Cockroaches were infected per os. The 
organism could be observed in the intestinal tracts and feces up to 
